MEDIUM
7th CBSE
IMPORTANT
Earn 100

Explain secondary treatment in wastewater treatment.

Important Questions on Wastewater Management

HARD
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 24 - Wastewater Management>EXERCISE>Q 4
What steps can we take to help in wastewater management?
MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 24 - Wastewater Management>EXERCISE>Q 5
Do you think that proper sanitation is necessary at public places? Make a list of basic facilities required at public places.
MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 24 - Wastewater Management>EXERCISE>Q 6
What is the role of aerobic bacteria in the secondary treatment of wastewater?
MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 24 - Wastewater Management>EXERCISE>Q 1

Here is a list of alternative sewage disposal systems. 

  • Vacuum toilets
  • Chemical toilets
  • Septic-tank toilets
  • Vermicomposting toilets

Which of the above-mentioned toilets are used in aeroplanes?

MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 24 - Wastewater Management>EXERCISE>Q 1

Here is a list of alternative sewage disposal systems. 

  • Vacuum toilets
  • Chemical toilets
  • Septic-tank toilets
  • Vermicomposting toilets

Which of the above-mentioned toilets provides manure?

MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 24 - Wastewater Management>EXERCISE>Q 2
As we know, garbage thrown on roads sometimes chokes the drains and water overflows. Do you think it is a good option to burn the garbage? What are some eco-friendly alternatives?
MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 24 - Wastewater Management>EXERCISE>Q 3
What do you think would be the ideal garbage disposal method in a desert?
MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 24 - Wastewater Management>EXERCISE>FUN ACTIVITIES

Solve the crossword puzzle using the clues given below.

Across

4. Wastewater generated through activities such as bathing, washing, mopping and cleaning

6. The undesirable substances present in water making it unfit for use

8. Solid wastes which settle down in the primary treatment of wastewater

Down

1. A network of pipes for disposal of wastewater

2. A mechanical process of passing wastewater through vertical screens

3. Addition of undesirable substances to water that makes it unfit for drinking and other activities

5. Suspended impurities present in water

7. A water-borne disease caused due to drinking of contaminated water 

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